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Failure potential evaluation in engineering experiments using load/unload response ratio method
Zhang LP(张浪平); Yu HZ; Yin XC(尹祥础); Zhang, LP (reprint author), China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China.
Source PublicationPURE AND APPLIED GEOPHYSICS
2013-01
Volume170Issue:1-2Pages:237-245
ISSN0033-4553
AbstractThe Load/Unload Response Ratio (LURR) method is proposed for prediction of the failure of brittle heterogeneous materials. Application of the method typically involves evaluating the external load on materials or structures, differentiating between loading and unloading periods, determining the failure response during both periods from data input, and calculating the ratio between the two response rates. According to the method, the LURR time series usually climbs to an anomalously high peak prior to the macro-fracture. To show the validity of the approach in engineering practice, we applied it to the loading and unloading experimental data associated with a two-floor concrete-brick structure. Results show that the LURR time series of the two floors consists of the damage evolution of the structure: they are at low level for most of the time, and reach the maxima prior to the final fracture. We then attempt to combine the LURR values with damage variable (D) to provide the health assessment of the structure. The relationship between LURR and D, defined as a function of Weibull stochastic distribution, is set up to provide more detailed underlying physical means to study damage evolution of the structure. The fact that the damage evolution of the structure correlates well with the variation of LURR time series may suggest that the LURR approach can be severed as a useful tool to provide the health assessment to big scale structures or ancient buildings.
KeywordLoad/unload Response Ratio (Lurr) Two-floor Structure Weibull Distribution Macro-fracture Structure Health Assessment
Subject Area固体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000313455700018
Funding OrganizationNational Natural Science Foundation of China [41004018]; Basic Research Foundation of Institute of Earthquake Science, China Earthquake Administration [02092425]
Classification二类/Q2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47026
Collection非线性力学国家重点实验室
Corresponding AuthorZhang, LP (reprint author), China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China.
Recommended Citation
GB/T 7714
Zhang LP,Yu HZ,Yin XC,et al. Failure potential evaluation in engineering experiments using load/unload response ratio method[J]. PURE AND APPLIED GEOPHYSICS,2013,170(1-2):237-245.
APA Zhang LP,Yu HZ,Yin XC,&Zhang, LP .(2013).Failure potential evaluation in engineering experiments using load/unload response ratio method.PURE AND APPLIED GEOPHYSICS,170(1-2),237-245.
MLA Zhang LP,et al."Failure potential evaluation in engineering experiments using load/unload response ratio method".PURE AND APPLIED GEOPHYSICS 170.1-2(2013):237-245.
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